Rotary pump



oct. 21, 1930.l H, Q JACKSQN 1,778,947

ROTARY PUMP Filed NOV. 21, 1927 INVENTORQ ATTORNEY i Y 2Q Patented QQtQZl, 193@ e I @HENRY cnn JACKSON, oisffLosatteintesugentiluomini@ Q y fhricetioe @led November 1327; i Serie-Tire# 234m;

` l My invention relates topumps of the rotary ytype 1 adapted to pump. fluids', the known charge ports has positioned therein a liner, keyed thereto, which key' is preferably posi-V tioned betweenrs'aid ports'so astofform also# anieffeetive fluid seal therebetween, said liner being also eccentrically bored,ltoliouse a rotor rwhich 'has a ntl'fue 4circular motion, said'nrotor l being concentrically positioned with respect to theouterperiphery of saidfcasingya set o'fflui'd pressure buckets' being pivoted to said rotor, which buckets are adapted to be actuated byc'entrifugal 'force as'said rotor isrro' tatedV so that each 'of saidbuc'kets will create a suction on the inlet sidetliereof, and on the other push the fluid pumped to said discharge port;V` L

V,It is also within 'the provincejof my inven tion to provide mynovel form of liner with inlet and exhaust Yports positioned Vin 'staggered relation to prevent undue'wearupon the buckets and on the rotor',a shearing effect being produced onv the fluid', and thus"pre-Y ventingswirling thereof, and vhenceinsuring @Dievenrwearfon said buckets and rotor, 5

It, is moreovery withinr the province invention to usestati'onary'pinspiirmly fasi tened tothe rotor, onY which the buckfetsfa're pivoted; and when' along rotor is 'used', t here may be aten'dency Jtospring`vv said pins. [To

preventthis tendency 'I may employY ameans in the shape ofa plate, secured atoneend to y the rotor `and at the yother .to the pim-thus; insuring that the buckets will `always be in*A true, andznio uneven wearthereon orion the rotor results; optional.-

vention as will -herein'after'more fullyappear,

l attainr by the construction and mechanismV describediin the speciiication andfillustrated H The `luse :of said .plates #is .01h ne,iaengaiuntgt @ai anni;

cationk: f L f Y Reference .dto-.thee vI*acctimpanying" drawings, in i which si-rnilar` reference", cha-re acters denote-similar'parts: 11n thedrawings, Fig. l: is a side velevational viewj ofY myimL VP'lovedPump l l "Fig. 2isa cross-sectional view, takenonthe .une 2 e,rig.r1,1looking;inthe.dilettantiyA the arrows,

Fig., 31s a similar view, takeny onithe line the arrows,r

thebuckets; v

Fig. 41S ,a detail .pefspetiiie viewiofn or "'Fivg'. 5 a. fragmentary@elevational view` i* showingA fa slightsmo'diiication iniwhichfa 3#-3,Fig12,4a1so lookingnfthe direction of "means-is provided tor preventingthe station-1 ary .holdtiie'buckets in true.,A i, gj A taken on the? -line 6.--6,'lfig'. 5, looking inl the direction of tliefarrows,-r Y Vvi L Describing my invention more in detail, my novel-.form of pump hasj-been subjected to a pins from springing,andhence;f always 1 n `v Figf'is an enlarged'crosslsectionalview,

number Iof tests, which testsindicate 20 inchesV` dry Yvacuum, and 128 inches with water: seal, f

when 'used .to pumpwateru `Tfhevolumetric eiiiciency was better than between 1Q pounds and 40pounds pressure, indicating a marked improvementf'over existing andl known pumps ofl this type.Y j

y As seeninthe draw1ngs,a preferablyicylin-i dricalrca'sing 2, provided with the .us'ualfcylinl der 'heads 4L 'and detachablewbolts 6, has ex-` i tended-therethrough ashatS adapted to be rotated within thebearings 10 equipped lwith the '.usual; lubricating means and-packing glands,shown but orming'nopart of myinrllhe Acasing 2 isjprovided with a suction inlet 12 and a discharge'A or exhaust outletflgto which may' be screwed `or# otherwise secured, Y the usual suction.r and dischargepipesforthe pump, a ysuitableibas'ei l16 beingeprovided, f L i i, whereby said, pump may be positionedor se?l Further objectsandfadvantagesoffmy inl cured in any desiredy position@V f'. j

-l The casing2pis bored concentrlcallyiior-the i vception of the rotor 2O mounted lon the'shaft 8, and detachably associated therewith by the dillerently positioned locking keys or pins 22, which keys are so positioned so as not to weaken said shaft. v

As seen in Figs. 2 and 3, the liner 18 has a thickened portion 24;, which portion is cut awayfas 'at 26 to provide an lexhaust o r discharge passage leadingto the discharge 14 of the pump, a set of dischargel passages 28 being provided in said liner, Which passages lead tothe fluid pressure chamberSOl `formed.

by vthe rotor and said liner, which liner ris alsov cut away as at 32 to :provide an inlet or- 15 l pump. 'Alset 'of inlet passagesare also suction passage leading to the inlet 12 of the provided in the liner 18, and said passages, as lv vell `as the passages 28, are in staggered relation "(see Fig. 1^) so as to produce an even vvear4 oni the buckets', presently to be more particularly described, and valso `ou the.` liner Y 18. As will be clear, as-said bucketspassfover said passages, there is a shearing eilect on the `'luifdfth'us preventing swirling, thereof and hence insuringan even Wear on saifd'buckets. 1-is seen iny Fig; 2, 'a Vsuitable-key '38 is provided 'for flockinglthe liner 18 tothe casi-ng', which key permits the ready removal of said liner 'from thefc'asing, and, sin'ceisaid keyV is positionedboth in said liner and said casing, 'and extends thejentire longitudinal length 1 .Y thereof, itV at Atliesarne timeprovides 'an effec-r tive seal' between the fluid inlet and the dis-` charge of the pump.

As seen more particularly in Fig. `,the ro- Y tor "20 is provided with a :set rof pocketsor cavities 40 of suitable formto `rece=ivetlie buckets 35, which pockets #are shaped to con-- ffform'to the :shape o'fvs'aid' buckets, said pockets'openirrglaterally `sothat the buckets may Y be inserted yinY'andremforfed from 'said pockets Without"removinglthe rotor 20, farotor lip i ptifon'?? 'being provided for a purpose presentlyto beexplained.

- Theibuckets :35 are constructed oi lsuitable misteri aland 'are preferably/:shaped asshown,

veach being provided with' a body `portion 42 cut away as shown so that it may be pushed laterally into the rotor, `'ande pivot portion 44,' which portion *husa cavity 46l to receive the 'stationary pivot pin e8, forced irto apass'a'g'evvay in the ietori120, which pin preferablyextends entirely throughthe rer-por 20, asseeninFigBp Y. f w

The' fluid pressure active portionnof` the bueket cemprises a blade orspoon portion radius fsw/ings closeto Ebut 1does not touch the complementaryradius 'of the roter pocket L10,

-andthe 'opening or gap inthe rotor, leading Vto the pocketsy "or i cavities s0, is sufficiently i Wide to letsaid blade \ory spoon pertionoass Jfreely .I `therethrough, `:-thus 1 permitting *the bi'ic'kets' 35' to fly-out b'ycentrifugal force las the rotor 20is rotatedfsaidibuckets gbeing free to move inandout` of the rotor Without friction orback pressure, said'buckets being obviously not subject toany "Wear in said movement. t Will also be noted that the pivot pins'48 receive all stresses to Which the buckets may besubjected, and otherwise there is no friction, Whatever, ,between the buckets and the rotor, as. just stated, a lmot Vfluid being always vn'uaintained between the'outer permitting the buckets to .be Withdrawny laterally, vvithout removing the `rotor 20,5or repairfor replacement; ff

As seen in 2,5the-fi1ll diameter xof the rotor 20 Whenininotion is in fluid seal with 'thetangent point ofathe lcenterline vofthe liner 18,` andtoinsure aneiective il'uid -seal between thenflet and :discharge ports, the buckets 35,(Which'mayfbeoii'any preferred number) `:areso positioned-in therefor that fthe precedingbucket vvi-llnot passlthe intake port 'until the :next succeeding bucket has passed the outlet port, the 'rotorvwith its lip v` Iportions 87 in themeantime ormingane-fl'ective, fluid seal lWith'th-e liner 18 seth-at no Vfluid can possibly pass from `the outlet tothe inlet, thus providing for-a marked efficiency'oztfopl eration.' e

covers the last passages in theo-liner L18, upto Within a short distance vfrom the discharge yport in said liner, creating a partial vacuum or suction, when the next succeeding bucketpasses theintakekport., l 1 l 1 Each bucket accordingly sucks Ainpthe ll-uid by the vacuum `or suction createdlon vone side, While the bucket on -theethe-rk side pushes the fluid in `front'tothe discharge forou-tletof the pump.`

ameter `oit-,3v inches and length of inches, running at 800 R. P. M., Athe centrifugal `force on-.the buckets. heldfthe same to lthe liner'l e Walllat a pressurefof 150V pounds." This icon# clusively vproves Vthat Va larger pump, `With 'en l f. I` esting'small pumps vvithfza .cylinder 'di-i l longer andheavierbuckets Would'prod'ucea y pressure 'of 500er morepounds, if'req'uired.

`jItV Will be observed alsothat :there is a true v`circllilar motion oflrthe rotor and buckets at all times, there jbeingno-rubbing for braking eect, 'providing' long life 'and -marked `'eiliciency for the apparatus, which isladaptable for use with any i'uid, Aas desired. "Moreover, the apparatus is simple inMconstructionueasily and 'inexpensively manufactured, and feasyto assemble and disassemble, providing-a means for easy andFqu-lckrepair.'

In Figsv-and 6I haveshgvvnia SghtgniQdiy Y f im The-next preceding bucketlof the rotor 20 y y 'cationrwhich is-especiallyadapted vfor long i rotors, and may be usedl or not, as desired.

v In such rotors there is a'tendency for the stationary pins 36, driven in the rotor, to spring. To counteract this tendency, I may v provide cheek or side plates or other holding members 54', through which said pins are l passed, avpin 56 being used to hold said members, which' are Apositioned in countersunk portions'of the rotor- 20". See Fig. 6.

It will also be noted that a film ortluid always surrounds the rotor at the outer ends of v the spoon portions of the buckets, and also be'- tween the radius of each bucket and the corresponding radius of the rotor,ninsuring a high'vacuum or pressure and a very efficient operation.

While I have thus described my invention with great particularity, it will be clear that the same may be modified throughout a wide range. I accordingly do not proposel toy be limitedto the exact details of construction shown and described, but reserve the right in practice to make any and all modications V3o l v v said liner and said casingand between Lsaid thereof that fallv within the scope of the appendedclaims. v A Y I claim as my invention:

vspoon portion, "being in said casing, a detachable sealing positioned in said linery and casing'betwe'ensaid 4 v inletxand exhaust ports, saidliner having an eccentric' opening, a rotor: in said opening.

positioned concentrically with respect to said casing,-said rotorbeing-provided-with a set.` u

of pockets, anda bucketmounted in: each of said pockets,"each of said buckets havinga spoon f portion adapted to bek projected o a through a gap rpositi'onedf in the V- periphery ofv said rotorand juxtaposedto each of said pockets, each of said'rbuckets, exceptsaid l y ,1,

atfall times ,fullyv en closed within said rotor. i f5. 1A rotor bucket adaptedfor use in connection with the rotor :ofrotary pumps,said

bucket f comprising a" conve'xofconcave uid pressure actuated spoon portion'andv abody' portion extending from said spoon portion,

said body portion being cut away 'to form a pivot portionfor said bucket. 'Y

name to this specification.V i o 1 Y f HENRY'ORR' JISLCKSON.y

In testimony whereof I have rSigne my Il, ,v

1.'In a rotary pump, a casing vprovided f i' with inlet and discharge` ports, a liner in'said casing, a detachable locking key positioned in l Y inletV and said discharge ports, and extend#` ing the entire longitudinal lengthof said casing and liner, said key being adapted to lock said liner to saidfcasingandform also a fluid pressure seal between said inlet and said discharge ports, a rotorv in said'lin'er, andal Y series ofv fluidv pressure buckets pivoted to said rotor and adapted to be actuated by vcentrifugal action as. said rotor vis rotated.

2.*In a rotary pump, a casing provided Y f with inlet and discharge ports, a rotor in said f casing, saidl rotor being provided vwith ai" L set of pockets," a' iiuid pressure bucket u 4 inlet and exhaust ports, a rotor in said casing, said rotor being Yprovidedwith a set of pocketssaid rotorV having a lip portion for Y each of said pockets,said lip portion providying a gap in the periphery of said rotor for each of said pockets, anda bucket mounted in o each kof said pockets and adapted to beswungloutwardly by*V centrifugal force, each of said veo buckets having a fluid lpressure. actuated spoon portion adapted to be projected outwardly through said gap, each of saidbuckets, except said spoon portion being atall times-positioned in said pockets.` l

4. InA a rotary'pu'm'p, in combination, 'a *Y lcasing having inlet'and exhaust ports,.aliner y 

